The single most common and rude characteristic of a USER is the lack of follow up. In my business, I help at least one hundred people per week and, at most, two people follow up with me and tell me how their situation is going. At the end of my emails, I always say, “Please let me know how you progress.” No response. I’ve been used.

Dana Manciagli is a career expert, speaker and private coach. She has spent more than 30 years as a Fortune 500 sales and marketing executive, now retired after more than a decade at Microsoft. Dana is the author of the book, "Cut the Crap, Get a Job!" and a prolific blogger. She sits on the worldwide board of Junior Achievement and has her MBA from the Thunderbird School of Global Management.